All of the Monteverde rollerball refills I have bought in local stores worked poorly.
I suspected that maybe store stock refills might just be too old and dry to write well (Pink and purple are sure to be slow sellers). I ordered a pack from Amazon, and those were bad too.
But maybe Amazon's stock was also old, so I sent them back, not to Amazon but directly to Monteverde. They replaced the refills, and the new ones are just as bad.
Sadly, these horrid refills are wasting warehouse space in many retailers. I hope Monteverde eventually goes under so someone competent can take their place.
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I went through 4 of these things, and they all write like a cheap ballpoint. These are absolutely nothing like a normal rollerball. They require ballpoint-like pressure to write.
Maybe they were all dried up, or maybe they are just cheap garbage. Maybe if Monteverde would do us the favor of adding the little wax ball to the tip, I could be sure. I don't think they are dried up, because pressing hard enough will create the thick dark line you would expect from a rollerball, so there must be ink in there.
EDIT:
FYI, if you have a pen which needs such a replacement, most of them will be able to take the common rollerball cartridge used by Cross, Retro, Waterford, and others instead of these. Some pens made for these cheap plastic refills are just barely too narrow for the metal refills, but most will work. Unfortunately, I think Monteverde's low-quality refill is the only source for color ink.
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